Adjustable injector razor



Aug. 31, 1965 a. J. CRAIG ADJUSTABLE INJECTOR RAZOR Filed May 14, 196 4IIIIIJI :cazrm INVENTOR.

F1618. FIG. 9. FIGJO.

90 Fla/Z United States Patent 3,203,092 ADJUSTABLE INJECTOR RAZOR BurnieJ. Craig, 1042 La Presa Drive, Pasadena, Calif. Filed May 14, 1964, Ser.No. 367,296 1 Claim. (Cl. 30-62) This invention relates to safety razorsand particularly to safety razors of the injector types in which newblades are supplied from a blade magazine.

The general object of the invention is to provide an injector razorwhich is simple in construction and in operation.

A more specific object of the invention is to provide a novel injectortype razor wherein a blade seat is integrally mounted on one side of ahandle and a clamping member is integrally mounted on the same side ofthe handle to move towards the blade seat to hold a blade on the seat.

An additional object of the invention is to provide a novel, adjustable,injector razor including a blade seat integrally mounted on a handle.

An additional object of the invention is to provide novel means foradjusting a guard member on an injector razor.

A further object of the invention is to provide an adjustable safetyrazor wherein a blade seat and a clamping member for holding a bladeupon the seat are mounted upon a handle member with the clamping memberintegrally connected with the rear of the handle and wherein the guardmember is integrally connected with the front of the handle and whereinthe guard member and the clamping member may each move in oppositedirections independent of the other in blade changing and in adjustment.

A more specific object of the invnetion is to provide a novel adjustableinjector type razor wherein a blade seat is integral with a handle and aguard member is mounted on the handle and wherein the guard member ismade of a material so that it may move to a limited extent toward andaway from the blade seat and is biased to hold a blade securely upon theblade seat while permitting, when desired, the adjustment of the bladeexposure and the removal of a blade and substitution of a new blade.

Other objects and advantages of the invention will be apparent from thefollowing description taken in connection with the accompanyingdrawings, wherein:

FIG. 1 is a front view of the razor;

FIG. 2 is a side elevation of the razor;

FIG. 3 is an enlarged fragmentary central section with parts inelevation taken on line 33, FIG. 1;

FIG. 4 is a section taken on line 4-4, FIG. 1;

FIG. 5 is a section taken on line 5-5, FIG. 1;

FIG. 6 is a fragmentary front view showing the body or handle;

FIG. 7 is a side elevation of the body;

FIG. 8 is a front view showing the blade seat;

FIG. 9 is a side elevation showing the blade seat;

FIG. 10 is a rear view showing the blade seat;

FIG. 11 is a front view of the adjusting dial;

FIG. 12 is a rear view of the adjusting dial;

FIG. 13 is a fragmentary front view showing the clamp: ing member;

FIG. 14 is an enlarged fragmentary section taken on line 14-14, FIG. 1;

FIG. 15 is a fragmentary front view showing a detail of the adjustableguard member;

FIG. 16 is a perspective view showing a stop pin;

FIG. 17 is a diagram showing the development of the cam and itsfollowers; and

FIG. 18 is an elevational view showing a blade magazine.

Referring to the drawing by reference characters the' ice invention isshown as embodied in a razor of the injector type which is indicatedgenerally as at 10. The razor, as shown, includes an elongated body orhandle 11. A blade seat 12 is mounted upon the upper end of the body.The blade seat 12 includes a forwardly extending blade receiving portionhaving lugs or blade stops 13 thereon for engagement with the front endedges of a blade 14 disposed on the seat 12.

The seat 12 includes a depending portion 15 which is disposed on therear of the body 11 in a cut away portion 16. The blade seat 12 and thedepending portion 15 are integrally mounted on the body by means such aswelding or gluing at 17. The depending portion 15 includes a groove 18in its rear face to receive a cam finger 19 on a blade magazine 20.

In order to hold a blade upon the blade seat 12 I provide a clampingmember indicated generally at 25. As shown, the clamping member includesa forwardly projecting blade clamping portion 26 and a depending portion27 which is integral with the portion 26 and which extends along therear face of the body 11. The lower end of the clamping member is shownas secured to the body by a screw 28 which passes through the body andengages an internally threaded collar 29 which is integral with thedepending portion 27.

The depending portion 27 is also secured to the body by a threadedcollar 30 on the depending portion which engages a screw 31 which passesthrough the body and the seat depending portion. The depending portion27 is shown as provided with forwardly projecting short flanges 32 whichare arranged at each side of and in the center of the depending portion27 and which fit in slots 32' in the blade seat depending portion 15.The flanges 32 may serve to guide the clamping member depending portionas it moves back and forth and the flange at the right in FIG. 13receives and guides the cam finger 19 on the blade magazine 20. p

A flange 32 disposed opposite to the flanges 32 serves to guide theupper edge of the cam finger.

The clamping member depending portion is made of a material such asmetal, plastic, et cetera, so that it can move backwardly and forwardlyto a limited extent and it is biased to move forwardly to urge the bladeclamping portion 26 forwardly and downwardly upon the blade and to forcethe blade 14 against the lugs 13. A stop pin 34a centrally disposed onthe clamping member contacts the rear of the blade in this blade holdingaction.

To change a blade the operator inserts the finger 19 of the blademagazine into the groove 18 with the lower end of the finger engagingone of the flanges 32. As the finger advances, the cam 19a thereonengages the wall of the. groove 18 and is pushed away from the rear ofthe blade seat. The rear face of the cam finger being in engagement withthe front face of the clamping member depending portion 27 will movethis depending portion rearwardly against its bias to thereby releasethe pressure of the portion 26 and the stop pin 34a on the blade andthus allow a new blade from the magazine 20 to be pushed into place andat the same time push out the old blade. When the blade exchange iscompleted the blade magazine with its finger will be withdrawn.

The screw 31 as well as the fastening means such as welding or gluingasat 17 serves to hold the blade seat depending portion 15 integral withthe handle 11.

The blade seat 12 is recessed as at 33 between the blade seat ends 33 onwhich the lugs 13 are arranged. The recess 33 receives a guard memberindicated generally at 34, as will be later described. The upper end 35of the body 11 is disposed in line with the recess 33 and helps tosupport the central portion of the blade seat 12.

The guard member 34 includes a transversely extending rigid guardportion 36 which is disposed just below the cutting edge 37 of the blade14 and extends forwardly and rearwardly of the cutting edge. The guardportion 36 is rounded as at 38 and may be longitudinally grooved as at39.

The guard member has ends 40 (FIG. 15) thereon which are connected to adepending portion 41. The guard member ends 40 and the guard portion 36are cut away as at 42 so that the ends 40 may be positioned under theblade seat ends 33 of the seat and under the lugs 13 on the ends 33'.

The guard member has a slot 44 therethrough to allow soap and cutwhiskers to pass away from the blade cutting edge.

The depending guard portion 41 may be secured as by gluing or welding asat 45 to the body 11. The depending portion 41 may also be secured as bya screw 46 to the body 11.

By moving the guard member 34 the guard portion 36 thereon may movebackwards and forwards under the blade seat so that the amount of bladeexposure may be varied and consequently the closeness of the shave maybe adjusted.

The body 11, the blade seat 12, the clamping member 25 and the guardmember 34 may be made of suitable material, such as metal or plastic. Ifplastic is used it may be of the thermoplastic or of thermo-set type andmay be such a polycarbonate, polypropylene, polyethylene, Plexiglas,Celcon, nylon, styrene, polester, epoxy or similar material which hassuitable characteristcs. If metal is used it may be steel, stainlesssteel, brass or other metal.

The body, blade seat, clamping member and guard member may be of thesame material or of different materials. It is preferable that one ormore of these be made of a material so that the members may moverelatively to each other forward or backward to a limited extent and maybe biased to move in one direction. In the embodiment described hereinthe blade seat is preferably integrally connected to the body and theclamping member moves backwardly and forwardly in the blade clampingoperation.

The blade clamping member 25 is biased to move forwardly so that theportion 26 forces a blade downwardly upon the blade seat and the stopmember 34a engages the rear end of a blade on the blade seat and pushesthe front edge of the blade against the lugs 13.

In order to move the guard member 34 so that the guard portion 36thereof may be shifted relative to the cutting edge of a blade 14 on theblade seat 12 I provide an actuating member indicated generally at bwhich as shown includes a dial 51. The dial 51 is arranged in a recess52 in the front face 53 of the body 11. The dial 51 has a shaft 54 whichextends forwardly from one side thereof and is fitted in a hole 55 inthe depending guard portion 41. A hub 56 on the dial engages the rearface of the depending guard portion 4 1.

On the other side of the dial, the shaft 54 has a cam rod 57 extendingtherethrough. The cam rod is fixed in position as by welding or the dialassembly may be a plastic or die casting. The shaft 54 beyond the camrod 57 passes through a hole 58 in a cam member 59. The cam member 59 ismounted in a recess 60 in the body 11 or may be cast integral with thebody. When the shaft 54 is rotated it causes the cam rod 57 to moveacross the cam face 61 on the cam member 59 so that when the dial 51 isturned in one direction it forces the depending guard portion 4-1forwardly. When the dial 51 is turned in a reverse direction the bias ofthe depending guard portion 41 cause this portion to move rearwardly tothus cause the guard portion 36 to move rearwardly under the cuttingedge.

The depending guard portion 41 has an arcuate slot 63 therein. The dial51 has a wing 64 thereon which moves in the slot 63 as the bladeexposure adjustment is made. The ends of the slot 63 limit rotation ofthe wing 64 and the dial in each direction.

The construction is such that when the dial 51 is rotated by movement ofthe wing 64 the cam rod 57 which engages the cam faces 61 on thedepending guard portion 42 will be rotated. The depending portion 41 ofthe guard member is biased to move rearwardly so that the cam faces 61are normally urged toward the cam mem ber 59. When the cam rod 57 isrotated in one direction it will, due to its engagement with the camfaces 61, cause the cam member 59 to move forwardly and consequentlywill cause the depending guard portion 41 to move forwardly to thusshift the guard portion 36 and increase the blade exposure. When thewing is rotated in anticlockwise direction it causes the guard portionto move rearwardly to decrease the blade exposure.

If it is desired to hold the dial 51 in a set position and thereforemaintain the desired blade exposure the upper half of the dial peripherymay be provided with toothlike serrations 66. A spring member 67 havingan end portion 68 embedded in the body 11 has a free end disposed in theupper part of the recess 52.

The spring is disposed above the axis of the dial 51. The spring isbiased so that the free end thereof is urged towards the axis of thedial and into engagement with one of the peripheral teeth 66 on thedial.

The teeth 66 have inclined faces and when the dial is rotated one of theinclined faces will force the spring away from the dial axis until thepeak of the tooth is reached, whereupon the spring will drop into thenext tooth and this action will continue until the desired adjustment issecured and the dial turning has ceased, whereupon the spring portion 67will enter the tooth aligned therewith and will hold the dial and theguard member in the desired adjustment.

Having thus described the invention, I claim:

A razor including an elongated body, a blade seat upon the upper end ofsaid body, said blade seat being immovable with respect to the body,said blade seat including a blade receiving portion having blade stopsthereon for engagement with the front end edges of a blade on the bladereceiving portion, a separately formed clamping member including aforwardly projecting blade engaging portion adapted to hold a blade uponthe blade seat, said clamping member also including a depending portiondisposed upon the rear of the body and integrally united to the body ata location below the blade seat, said clamping member depending portionbeing made of a material having resilient characteristics so that it maymove backwardly and forwardly to a limited extent, stop means associatedwith the blade clamping member and adapted when the clamping member isin clamping position to urge a blade on the blade receiving portion intoengagement with the blade stops, said clamping member depending portionbeing biased due to the resiliency of the material from which it is madeto move forwardly to urge the blade engaging portion forwardly to clampa blade upon the blade seat, there being a slot in advance of saidclamping member depending portion for the reception of a cam finger on ablade magazine, the cam finger being adapted to move the clamping memberand its blade engaging portion in a direction away from the blade seat,and a guard member for a blade upon the blade seat, said guard memberbeing free of attachment to the blade seat, said guard member includinga guard portion disposed below the cutting edge of a blade on the bladeseat, said guard member including a depending portion which supports it,said guard member depending portion being secured to the front of thebody at a location below and remote from the blade seat, the guarddepending portion being made of a material having resilientcharacteristics so that it may move backwardly and forwardly to alimited extent to thereby move the guard member and the guard portionbackwardly and forwardly with regard to the blade seat and under theblade seat while the blade seat remains stationary, the guard dependingportion being biased due to the resiliency of the material from which itis made to move in one direction, and manual means operable to move theguard depending portion in a reverse direction and against the bias ofsaid guard depending portion to thereby shift the guard portion andchange the blade exposure.

References Cited by the Examiner UNITED STATES PATENTS 2,799,926 7/57Shaylor 3063 3,095,645 7/63 Stahl 30-63 3,111,756 11/63 Kruger et a1.30-63 3,128,551 4/64 Crown 30-63 References Cited by the ApplicantUNITED STATES PATENTS 10 WILLIAM FELDMAN, Primary Examiner.

THOMAS J. I-IICKEY, MYRON C. KRUSE, Examiners.

